Deflooder for internal-combustion engines



F. L. MAYTAG.

DEFLOODER FOR INTERNAL COMBUSTION ENGINESC.

' APPLICATION FILED MAY 31, 1911.

Mm? A;

Patented J 111 19 8, 1920.

UNITED STATES parauraforrice;

ram) L. metres, or NEWTON, mm.

nnrLoonEn r013. INTERNAL-COMBUSTION moms To all whom it may concern: 4

Be it known that I, FRED L. MAYT G, a citizen of the- United States, residing at Newton, in the county of Jasper and State of Iowa, have invented certain new and useful Improvements in Deflooders forInternal-Combustion Engines, .of which the following is a specification.

This invention relates to deflooders for internal combustion engines, and particularly to an extremely simple, eflicacious and economical device ,for draining the condensed fuel from the crank case.

A difficult problem to solve in the two-cycle engine has been to provide a device to drain' the condensed fuel from the crank case in a satisfactory manner.

It is a well known fact that with the present grade of gasolene for fuel, there is a certain amount of the mixture that comes in. contact with the walls of the passages and becomes condensed before it can be delivered to the combustion end of the cylinder. When this condensed fuel accumulates in the crank case of a two cycle engine, it causes the engine to lose its power and often causes it to stop because this unmixed fuel is picked up by the mixed fuel going to the cylinder; -This makes the charge too rich to explode readily, and to overcome this defect this improvement has been devised. I One of the objects of this invention is to provide a device that will in a practical manner drain the crank case of condensed 'fuel wlthout excessive loss of pressure.

It is a further object of this invention to provide a. float to ride on the fuel in the supply reservoir to prevent the fuel being drawn up through thedeflooding opening.

I A further object of this invention is to provide an indicator to show the amount of fuel in the reservoir or supply tank.'

Other objects and advantages will appear as the following description proceeds.

In the accompanyingdrawings, I have illustrated a preferred embodiment of my invention. However, I wish it to be understood that it is capable of modifications and changes without departing from the spirit of the invention,vexcept as limited by the appended claims.

In the drawings? .7 Figure 1 is a side elevation of an internal combustion engine embodying my invention,

' parts being broken away to show my new deperfecting Specification of Letters-Patent. .Patented J fine 8,1920.- ap'plication filedliay 31, 1917. Serial No. 171,971.

flooder and float.

2 is an enlarged transverse vertical sectional view of mynew deflooder.-

In the drawings, 1 represents generally I the fuel tank or reservoir, upon which ismounted the crank case 2. The cylinder 3- carries the piston 4. Located in the lower portionof the crank case is an aperture 5, which opens between the crank case and the fuel tank. In the fuel tank is a float 6, 7 which rides upon the fuel contained therein, and towhich float is attached a gage wire 7 which passes through a suitable opening 8 in the upper portion of the fuel tank and'outside of the crank case. This wireor rod 7 projects above this upper'portion of the fuel tank, and servesvas an indicator as to the amount of fuel in the tank.

The aperture 5 opening between the crank case and the fuel tank'is of .tapered formation, it' constricting at its upper end, and enlarging at its lower end. This aperture 5 with threads 10 and vthe head 11, whereby it may be screwed into a hole provided therefor through'the bottom of the crank case and easily removed therefrom for cleaning or replacement. As is shown in Fig. 1, the rounded upper end 12 of this nipple extends slightly above the bottom of the crank case.

In a four cylinder engine the fuel that condenses in the cylinder leaks past the rings of the piston then down to the crank case, and finally into the lubricatingv oil; but in the two cycle type of gas engine, the condensed fuel settles to the bottom of the crank case, and consequently destroys the even'flow of combustible mixture. With my improved deflooder, this difliculty in. the two cycle engine is eliminated for the reason that the condensed fuel is effectively to'the combustion end'of the cylinder, and 1 10 any condensed fuel, oil, etc. that m'ay have 'collected in the bottom of the crank case upon the fuel in the fuel tank, the fuel is prevented from being drawn up through the deflooding opening 5 by virtue of the fact that the float is directly below the opening and hence before any fuel could be thus drawn up it would have to be drawn from beyond the edges of the float which would not occur owing to the greatness of v the distance, The rod 7 carried by the float and extending a suitable distance above the opening 8, provides. an effective indicator to show the amount of fuel-in the reservoir.

In Fig. 1" the-section is taken through the bottomof the crank case, but the carbureter which is positioned outside of the crank case is shown merely to more clearly illustrate the relation of the parts. The

float 6' and the carburetor pipe leading downwardly into the fuel tank are so ar- I ranged that the float is capable of up and down movement.

Having now described my invention, I claim 1 1. In apparatus of the class described a crankcase, a fuel reservoir beneath said case, the bottom of said crank case having a free unobstructed opening therethrough communicating with said reservoir, said opening being tapering with its small end at the top whereby any liquid collected in the crank case will be blown through the opening without excessive loss of pressure.

2. In apparatus of the class described a crank case, a fuel reservoir beneath said case, the bottom of said crank case having an opening therein directly connecting said case and said reservoir, a nipple removably;

flooding purposes, the small end of said secured in said opening, said nipple havin a tapered opening therethrough the smal end of said tapered opening being at the top '45 of the nipple and of small diameter whereby any liquids such as fuel, oil, orthe like'that may have collected in the bottom of the casing will be blown through said nipple into the reservoir without excessive loss of pressure in the crank case and whereby the opening may be readily cleaned by first removing the nipple, in the event that the opening in the nipple .should become clogged.

3. In apparatus of the class described a fuel reservoir, a crank case mounted above said reservoir, a tapered opening directly connecting said case and said reservoir for deflooding purposes, the small end of said opening being up and of small diameter,and a float in said reservoir directly below'said opening to decrease the possibility of any fuel being drawnfrom said reservoir upwardly through said opening.-

4; In apparatus of the class described a reservoir, a crankcase mounted above said reservoir, a tapered opening directly connecting said case and said reservoir for deopening being up and of small diameter, a float in said reservoir directly below said opening todecrease-the possibility of any fuel being-drawn from said reservoir upwardly through said opening, and a wire 7 extending from said float upwardly to serve as a gage as to the contents ofsaid reservoir.

In witness whereof, I hereunto subscrlbe my name to this specification in the presence of two witnesses. v FRED L.- MAYTAG. Witnesses:

R.-A. BRADT, W. L. PICKENS. 

